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  2. Model M keyboard - Wikipedia

    en.wikipedia.org/wiki/Model_M_keyboard

    Space Saving Keyboard (no numeric keypad or LLP) 1370477 Buckling spring 101 No Yes PS/2 Yes Blue on oval, ULC Lexmark 1993–96 Lexmark International, Inc. 1984 A March 1996 Lexmark-made model with this part number exists with the older grey badge. 1370478 Buckling spring 101 Yes Yes PS/2 Yes Blue on oval, ULC Lexmark 1993 Lexmark Int'l. Inc. 1984

  3. Telephone keypad - Wikipedia

    en.wikipedia.org/wiki/Telephone_keypad

    A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s – this replaced rotary dialing , that had been developed for ...

  4. Numeric keypad - Wikipedia

    en.wikipedia.org/wiki/Numeric_keypad

    Numeric keypad, integrated with keyboard Numeric keypad, as a separate unit. For use with a shorter keyboard or laptop which omits the numberpad Bluetooth numeric keypad, working also as calculator A numeric keypad , number pad , numpad , or ten key , [ 1 ] [ 2 ] [ 3 ] is the palm-sized, usually-17-key section of a standard computer keyboard ...

  5. DTMF - Wikipedia

    en.wikipedia.org/wiki/DTMF

    Autovon keypads were one of the few production units to include all 16 DTMF signals. The red keys in the fourth column produce the A, B, C, and D DTMF events. Before the development of DTMF, telephone numbers were dialed by users with a loop-disconnect (LD) signaling, more commonly known as pulse dialing (dial pulse, DP) in the United States.

  6. IBM 700/7000 series - Wikipedia

    en.wikipedia.org/wiki/IBM_700/7000_series

    The IBM 700/7000 series is a series of large-scale computer systems that were made by IBM through the 1950s and early 1960s. The series includes several different, incompatible processor architectures. The 700s use vacuum-tube logic and were made obsolete by the introduction of the transistorized 7000s.

  7. 7000 series - Wikipedia

    en.wikipedia.org/wiki/7000_series

    7000-series highways, a series of highway designations in the Canadian province of Ontario; Dell Inspiron 7000 series laptop computers; IBM 7000 series, discrete transistor digital computers in the late 1950s and 1960s

  8. Table of keyboard shortcuts - Wikipedia

    en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

    Ctrl+5 (numeric keypad) or Function+Ctrl+I (laptop) ≣ Menu: ≣ Menu or ⇧ Shift+F10: Toggle selected state of focused checkbox, radio button, or toggle button Space: Space: Space: Space: Activate focused button, menu item etc. ↵ Enter: Space (also ↵ Enter [notes 5] for menu items) ↵ Enter: ↵ Enter: Expand a drop-down list F4 or Alt+↓

  9. Dell PowerConnect - Wikipedia

    en.wikipedia.org/wiki/Dell_PowerConnect

    The 7000-series offer the same type of ports: both the 1G on the front as optional 10G and stacking modules on the rear side. Unlike the 6200 series, firmware for the 7000 series does support new functionality via version 4.x and 5.x like their 10G brothers in the 8024 and 8100 series.